operators_manual

This alarm sound is active when the
Engine Oil Pressure light is active (turned
on by the engine).
CAUTION
Continuing to operate your vehicle with
insuf
ficient oil pressure will cause seri-
ous engine damage. Failure to comply
may result in equipment or property
damage.
It is important to maintain oil pressure
within acceptable limits. For further
information on engine oil and normal
operating pressures, see the Engine
Operation and Maintenance Manual. If the
oil pressure fails to rise within 10 seconds
after the engine starts, stop the engine and
determine the cause. Check the engine
manufacturer's manual for the correct oil
pressure ranges for your vehicle's engine.
If the oil pressure suddenly drops, or the
audible alarm and engine oil pressure
warning light come on while driving, safely
stop the engine and address the issue. For
further information on engine gauges and
operating your engine properly
, refer to
Engine Maintenance material.
Vehicle Air Pressure
The Primary Air Pressure gauge indicates
pressure in the rear braking system. The
Secondary gauge indicates pressure in the
front braking system. Each gauge indicates
the amount of air pressure in each system
in pounds per square inch (psi). On
vehicles equipped with metric air pressure
gauges, the gauge face plate includes a
kPa (major) scale and psi (minor) scale.
NOTE
Be sure the air pressure registers
more
than 100 psi (690 kPa) in both
service systems before you move the
vehicle.
WARNING
If the air pressure falls below 60 psi
(414
kPa) the spring brakes may stop
the vehicle abruptly, which could
cause an accident resulting in person-
al injury or death. Observe the gauges.
If the warning alert comes on, do not
continue to drive the vehicle until it has
been properly repaired or serviced.
WARNING
The air pressure gauge may appear
and
change color along with an audi-
ble alarm tone to indicate a dangerous
situation: there is not enough air pres-
sure in the air tanks for repeated brak-
ing and the brake system has failed.
Without the use of your service brakes
your spring brakes could suddenly ap-
ply causing a wheel lockup, loss of
control, or overtake by following vehi-
cles. This may cause an accident re-
sulting in personal injury or death.
Bring the vehicle to a safe stop right
away, while you still have control of the
vehicle.
Digital Gauges
If a gauge has a red zone (representing a
gauge region outside of a components
normal operating range), it is indicated by a
horizontal red line.
CONTROLS - Gauges
66 Y53-6096-1C1 (09/20)
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